1. Whoops. Public now. Can’t believe nobody mentioned before now!
2. Interesting. Shall take a look when I remember to!
3. Badly-developed heuristics. See the generator source!
4. Cool idea.
5. No; the original puzzle didn’t have any of these, and I couldn’t think of a phraseology that I thought would immediately make sense to everybody, so I didn’t bother. Not opposed to it in theory though!